I'd like to have good statistics of how much time I spend doing various tasks on my computer (I'm using Windows Vista), so I'm looking for a good tool for that. It has to monitor what application I am using, and in the case of browsing, what websites I visit (in Firefox).
Additional features I'd like to see are grouping (e.g.
reader.google.com under "Web surfing") and exporting data (so I can analyze them on my own, if I want to).
What would you recommend for this task?